Scaffold hanger



April 25, 1939. F F. BOOMGARDEN 2,155,838

" SCAFFOLD HANGER Filed April 18, 1938 2 Sheets-Sheet 1 Inventor fiao/irya Pa e /7 April 25, 1939. F. BooMGARDEN SCAFFOLD HANGER Filed April 18, 1938 2 Sheets-Sheet '2 Invgniof A iiorneys F2700? jam Patented Apr. 25, 1939 UNlTED STATES PATENT OFFICE 4 Claims.

of its important objects to provide, in a manner as hereinafter set forth, a device of this character embodying novel means through the medium of which a scaifold or the like may beexpeditiously suspended from the eaves of buildmgs.

Another very important object of the invention is to provide a scaffold hanger of the aforementioned character comprising a novel construction whereby the grip of the device on the building eave will be increased as the weight thereon increases.

Another very important object of the invention is to provide a scaffold hanger of the character described which is adapted for use on various types of roofs and which will damage the roof in no way.

Other objects of the invention are to provide a scaffold hanger of the character set forth which will be comparatively simple in construction, strong, durable, highly eflicient and reliable in use, compact and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is an elevational view looking at one side of an embodiment of the invention, showing the device in use.

Figure 2 is an elevational view of the invention, looking at the other side thereof.

Figure 3 is a. view in front elevation of the device.

Figure 4 is a view in vertical section through the upper jaw.

Figure 5 is a view in bottom plan of the upper aw.

Referring now to the drawings in detail, it will be seen that the reference numeral I designates the shingled roof of a building 2. The reference numeral 3 designates one of the eaves of the roof I. The embodiment of the present invention which has been illustrated comprises a hook 4 of suitable metal having a depending shank 5. Mounted for universal rocking adjustment on the free end of the hook 4 through the medium of a ball and socket connection 6 is a jaw I of suitable metal. The jaw I is provided on its face with a plurality of prongs 8 which are adapted to bite into the shingles of the roof in the manner shown to advantage in Figure 1 of the drawings. The prongs 8 are arranged to leave smooth marginal portions [9 on the face of the jaw 1. Hingedly mounted on the jaw l is a metallic cover or shield 9 for the prongs 8 when the device is to be attached to other types of roofs. The cover 9 is in the form of a housing for the reception of the prongs 8 and includes an inturned flange 20 which bears on the smooth marginal portions IQ of the jaw 1 when said cover is in use.

Pivotally mounted at an intermediate point on the lower portion of the hook 4 is a clamping lever I0. Mounted for universal rocking adjustment on one end of the lever I!) through the medium of a ball and socket connection II is a lower jaw l2 engageable beneath the eave 3. The jaws 1 and I2 are adapted to firmly grip the eave 3 of the roof therebetween.

The other end of the lever Ill is operatively connected by a link I3 to the upper end portion of a metallic bar l4 which is mounted for vertical sliding movement on the shank 5 and which extends" below the lower end of said shank. The bar I4 is slidably mounted on the shank 5 through the medium of headed pins or the like I5 mounted on said bar and operable in slots l6 which are provided therefor in said shank. The lower end portion of the bar I4 has formed therein an opening I! for suspending the scaffold therefrom. A coil spring I8 has one end connected to the shank 5 and its other end connected to one end of the lever I for yieldingly urging the lower jaw l2 toward closed position.

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. One of the eaves 3 of the roof I is clamped between the jaws 1 and I2 in the manner shown to advantage in Figure 1 of the drawings. ,When the device is to be used on a shingled roof the cover or shield 9 is swung to open position (see Figure 4) to permit the prongs 8 of the jaw 1 to function. The scaffold or other apparatus is suspended from the lower end of the slidably mounted bar I4. Thus the weight of the scafiold and the load thereon is utilized to actuate the lever Ill through the medium of the link l3 in a manner to tightly clamp the eave 3 of the roof between the jaws l and I2. The spring l8 clamps the device to the roof while no weight is on said device. Of course, the bar I4 moves vertically on the shank for actuating the lever l0 through the link l3. When the device is to be used on certain other types of roofs the cover 9 is swung to closed position over the prongs 8 in the manner shown in Figures 2 and 3 of the drawings.

It is believed that the many advantages of a scaffold hanger constructed in accordance with the present invention will be readily understood and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

l. A scaffold hanger comprising a hook including a depending shank, a lever pivotally mounted, at an intermediate point, on said hook, a bar slidably mounted on the shank, a link operatively connecting the lever to the bar for actuation thereby, and coacting jaws on one end of the hook and the lever for clamping the eaves of roofs therebetween.

2. A scaffold hanger comprising a hook including a depending shank on one end, said shank having spaced longitudinal slots therein, a bar slidably mounted on the shank and including headed attaching pins operable in the slots, a lever pivotally mounted, at an intermediate point, on the hook at a point adjacent the shank, a

link operatively connecting the lever at one end to the bar for actuation thereby, coacting jaws mounted for universal rocking adjustment on the other ends of the hook and the lever for clamping the eaves of roofs therebetween, and a spring connected to the lever for yieldingly urging said lever toward clamping position.

3. A scaffold hanger comprising a hook, a lever pivotally mounted on said hook, coacting jaws rockably mounted on one end of the hook and lever for clamping a roof therebetween, and means for actuating said lever, one of the jaws comprising prongs on its face adapted to bite into the roof, and a cover for the prongs hingedly mounted on said one jaw.

4. A hanger of the class described comprising a pair of pivotally connected members adapted to grip a support therebetween, a jaw on one of said members engageable with the support, the face of said jaw comprising a plurality of prongs adapted to bite into the support and further including smooth marginal portions free of said prongs, and a cover for the face of said jaw hingedly mounted on said jaw, said cover comprising a housing for the reception of the prongs and further comprising an inturned flange engageable with the smooth marginal portions of the jaw when said cover is in operative position.

FREDERICK BOOMGARDEN. 

